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95c453a221
For convenience, we had added the folder that dotest.py was in to sys.path, so that we could easily write things like `import lldbutil` from anywhere and any test. This introduces a subtle problem when using Python's package system, because when unittest2 imports a particular test suite, the test suite is detached from the package. Thus, writing "import lldbutil" from dotest imports it as part of the package, and writing the same line from a test does a fresh import since the importing module was not part of the same package. The real way to fix this is to use absolute imports everywhere. Instead of writing "import lldbutil", we need to write "import lldbsuite.test.util". This patch fixes up that and all other similar cases, and additionally removes the script directory from sys.path to ensure that this can't happen again. llvm-svn: 251886
122 lines
4.1 KiB
Python
122 lines
4.1 KiB
Python
"""
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Test that 'stty -a' displays the same output before and after running the lldb command.
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"""
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from __future__ import print_function
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import use_lldb_suite
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import os
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import lldb
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from lldbsuite.test.lldbtest import *
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class TestSTTYBeforeAndAfter(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@classmethod
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def classCleanup(cls):
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"""Cleanup the test byproducts."""
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cls.RemoveTempFile("child_send1.txt")
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cls.RemoveTempFile("child_read1.txt")
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cls.RemoveTempFile("child_send2.txt")
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cls.RemoveTempFile("child_read2.txt")
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@expectedFailureHostWindows("llvm.org/pr22274: need a pexpect replacement for windows")
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@no_debug_info_test
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def test_stty_dash_a_before_and_afetr_invoking_lldb_command(self):
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"""Test that 'stty -a' displays the same output before and after running the lldb command."""
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import pexpect
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if not which('expect'):
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self.skipTest("The 'expect' program cannot be located, skip the test")
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# The expect prompt.
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expect_prompt = "expect[0-9.]+> "
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# The default lldb prompt.
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lldb_prompt = "(lldb) "
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# So that the child gets torn down after the test.
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self.child = pexpect.spawn('expect')
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child = self.child
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child.expect(expect_prompt)
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child.setecho(True)
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if self.TraceOn():
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child.logfile = sys.stdout
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if self.platformIsDarwin():
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child.sendline('set env(TERM) xterm')
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else:
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child.sendline('set env(TERM) vt100')
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child.expect(expect_prompt)
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child.sendline('puts $env(TERM)')
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child.expect(expect_prompt)
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# Turn on loggings for input/output to/from the child.
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with open('child_send1.txt', 'w') as f_send1:
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with open('child_read1.txt', 'w') as f_read1:
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child.logfile_send = f_send1
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child.logfile_read = f_read1
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child.sendline('stty -a')
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child.expect(expect_prompt)
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# Now that the stage1 logging is done, restore logfile to None to
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# stop further logging.
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child.logfile_send = None
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child.logfile_read = None
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# Invoke the lldb command.
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child.sendline('%s %s' % (lldbtest_config.lldbExec, self.lldbOption))
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child.expect_exact(lldb_prompt)
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# Immediately quit.
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child.sendline('quit')
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child.expect(expect_prompt)
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with open('child_send2.txt', 'w') as f_send2:
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with open('child_read2.txt', 'w') as f_read2:
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child.logfile_send = f_send2
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child.logfile_read = f_read2
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child.sendline('stty -a')
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child.expect(expect_prompt)
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child.sendline('exit')
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# Now that the stage2 logging is done, restore logfile to None to
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# stop further logging.
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child.logfile_send = None
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child.logfile_read = None
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with open('child_send1.txt', 'r') as fs:
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if self.TraceOn():
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print("\n\nContents of child_send1.txt:")
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print(fs.read())
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with open('child_read1.txt', 'r') as fr:
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from_child1 = fr.read()
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if self.TraceOn():
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print("\n\nContents of child_read1.txt:")
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print(from_child1)
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with open('child_send2.txt', 'r') as fs:
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if self.TraceOn():
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print("\n\nContents of child_send2.txt:")
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print(fs.read())
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with open('child_read2.txt', 'r') as fr:
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from_child2 = fr.read()
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if self.TraceOn():
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print("\n\nContents of child_read2.txt:")
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print(from_child2)
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stty_output1_lines = from_child1.splitlines()
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stty_output2_lines = from_child2.splitlines()
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zipped = list(zip(stty_output1_lines, stty_output2_lines))
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for tuple in zipped:
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if self.TraceOn():
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print("tuple->%s" % str(tuple))
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# Every line should compare equal until the first blank line.
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if len(tuple[0]) == 0:
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break
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self.assertTrue(tuple[0] == tuple[1])
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